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Crystallographic and modeling studies of RNase III suggest a mechanism for double-stranded RNA cleavage.
BACKGROUND Aquifex aeolicus Ribonuclease III (Aa-RNase III) belongs to the family of Mg(2+)-dependent endonucleases that show specificity for double-stranded RNA (dsRNA). RNase III is conserved in… Expand
Noncatalytic assembly of ribonuclease III with double-stranded RNA.
Ribonuclease III (RNase III) represents a family of double-stranded RNA (dsRNA) endonucleases. The simplest bacterial enzyme contains an endonuclease domain (endoND) and a dsRNA binding domain… Expand
Crystal structure of unligated guanylate kinase from yeast reveals GMP-induced conformational changes.
The crystal structure of guanylate kinase (GK) from yeast (Saccharomyces cerevisiae) with a non-acetylated N terminus has been determined in its unligated form (apo-GK) as well as in complex with GMP… Expand
Complete crystal structure of monocyte chemotactic protein-2, a CC chemokine that interacts with multiple receptors.
Monocyte chemotactic protein 2 (MCP-2) is a CC chemokine that utilizes multiple cellular receptors to attract and activate human leukocytes. MCP-2 is a potent inhibitor of HIV-1 by virtue of its… Expand
Dynamic roles of arginine residues 82 and 92 of Escherichia coli 6-hydroxymethyl-7,8-dihydropterin pyrophosphokinase: crystallographic studies.
6-Hydroxymethyl-7,8-dihydropterin pyrophosphokinase (HPPK) catalyzes the pyrophosphoryl transfer from ATP to 6-hydroxymethyl-7,8-dihydropterin (HP), the first reaction in the folate biosynthetic… Expand
Structure and function of residue 104 and water molecules in the xenobiotic substrate-binding site in human glutathione S-transferase P1-1.
Two variants of human class pi glutathione (GSH) S-transferase 1-1 with either isoleucine or valine in position 104 (hGSTP1-1[I104] and hGSTP1-1[V104]) have distinct activity toward (+)-anti-7,… Expand
Structure and dynamics of 6-hydroxymethyl-7,8-dihydropterin pyrophosphokinase.
- H. Yan, J. Błaszczyk, B. Xiao, G. Shi, X. Ji
- Chemistry, Medicine
- Journal of molecular graphics & modelling
Folates are essential for life. Unlike mammals, most microorganisms must synthesize folates de novo. 6-Hydroxymethyl-7,8-dihydropterin pyrophosphokinase (HPPK) catalyzes pyrophosphoryl transfer from… Expand
Reaction trajectory of pyrophosphoryl transfer catalyzed by 6-hydroxymethyl-7,8-dihydropterin pyrophosphokinase.
6-hydroxymethyl-7,8-dihydropterin pyrophosphokinase (HPPK) catalyzes the Mg(2+)-dependent pyrophosphoryl transfer from ATP to 6-hydroxymethyl-7,8-dihydropterin (HP). The reaction follows a bi-bi… Expand
Bisubstrate analogue inhibitors of 6-hydroxymethyl-7,8-dihydropterin pyrophosphokinase: synthesis and biochemical and crystallographic studies.
6-Hydroxymethyl-7,8-dihydropterin pyrophosphokinase (HPPK) catalyzes the transfer of pyrophosphate from ATP to 6-hydroxymethyl-7,8-dihydropterin (HP), leading to the biosynthesis of folate cofactors.… Expand
Structural basis for the aldolase and epimerase activities of Staphylococcus aureus dihydroneopterin aldolase.
- J. Błaszczyk, Y. Li, J. Gan, H. Yan, X. Ji
- Medicine, Chemistry
- Journal of molecular biology
- 20 April 2007
Dihydroneopterin aldolase (DHNA) catalyzes the conversion of 7,8-dihydroneopterin (DHNP) to 6-hydroxymethyl-7,8-dihydropterin (HP) and the epimerization of DHNP to 7,8-dihydromonopterin (DHMP).… Expand